{"problem":{"name":"AtCoder Quiz","description":{"content":"AtCoder currently holds four series of regular contests: `ABC`, `ARC`, `AGC`, and `AHC`. What is the series of regular contests currently held by AtCoder in addition to $S_1$, $S_2$, and $S_3$?","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc217_b"},"statements":[{"statement_type":"Markdown","content":"AtCoder currently holds four series of regular contests: `ABC`, `ARC`, `AGC`, and `AHC`.\nWhat is the series of regular contests currently held by AtCoder in addition to $S_1$, $S_2$, and $S_3$?\n\n## Constraints\n\n*   Each of $S_1$, $S_2$, and $S_3$ is `ABC`, `ARC`, `AGC`, or `AHC`.\n*   $S_1$, $S_2$, and $S_3$ are pairwise different.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$S_1$\n$S_2$\n$S_3$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc217_b","tags":[],"sample_group":[["ARC\nAGC\nAHC","ABC\n\nGiven in input are `ARC`, `AGC`, and `AHC`. The rest is `ABC`."],["AGC\nABC\nARC","AHC"]],"created_at":"2026-03-03 11:01:14"}}